Home / 87,919.65-121,328.96-47,634.41

Finding the Fourth Proportional to 87,919.65, 121,328.96 and 47,634.41

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Solution

The fourth proportional to 87,919.65, 121,328.96 and 47,634.41 is: 65,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.65 : 121,328.96 = 47,634.41 : x
  2. Step 2: Convert to fraction form
    87,919.65/121,328.96 = 47,634.41/x
  3. Step 3: Cross multiply
    87,919.65x = 121,328.96 × 47,634.41
  4. Step 4: Simplify right side
    87,919.65x = 5,779,433,490.66
  5. Step 5: Solve for x
    x = 5,779,433,490.66/87,919.65
  6. Step 6: Final answer
    x = 65,735.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.